I've been noticing that every single thing is irritating me and having headaches

I am a 26 year old Female from Pennsylvania. 5 ft 4 in , 134 pounds. I smoke about 1/2 a pack of menthol cigarettes per day. I currently take 30mg of Paxil daily for PTSD, 0.5 mg of Klonopin as needed for anxiety, Zantac for acid reflux and amitriptyline 50mg at night for chronic daily headache. I also smoke about a joint per night of marijuana when I have it. So lately Ive been noticing that every single thing is irritating me. Small things, repetitive sounds, people talking, the weather changing, different smells, clutter, clothes being too tight, bright lights, certain music, and other sensory-type things But also, I am beginning to become extremely frustrated, annoyed, irritated (almost ready to flip out) at people in public who aren't very friendly, or even their maneurisms which is so mean of me cause they cant help body language but I CANT HELP IT. THE FEELINGS JUST COME. Objects and clutter have been really getting to me lately but I am so fatigued by all the stress and overwhelming feeling of the things mentioned above that I try to clean, organize, de-clutter, and I get too tired, and then I get annoyed with myself for being too tired to the point of tears. When I'm alone and I get these feelings, for some reason I have been hitting myself in the forehead repeatedly and very hard with the palm of my hand and it is almost as if someone else is controlling my body! I work as a Therapeutic Staff Support for many children that are self-injurious and I do not condone nor believe in it, yet I keep doing it when I get into these sensory spells and episodes of severe agitation. I also can't make up my mind lately and that makes me angry and frustrated as well. It could be the simplest thing such as what pen to use or what I want to eat. Along with the indecisiveness, I have been having a lot of disturbing memory problems. I forget things I was just told a few seconds ago, or I remember inaccurate details of events or situations that were less than a week prior. I forget what I was about to say to people when I have conversations with them and I will walk into a room with a purpose and forget that purpose once I get to the room. Another really disturbing one is that I will be watching a TV show, the commercials will come on and not even be 30 seconds into them yet and I will forget what show I was just watching. I really need advice and help. This is all starting to really effect my daily living. I am getting less things done and getting behind on my paperwork at work, I am forgetting to get important things taken care of such as bills and appointments. I have physical symptoms too but I am most disturbed and rather terrified of the stuff above more so than I am about my physical symptoms, so I will discuss them briefly just in case it may help... I always have a headache. Like a dull, full feeling in my entire head radiating to the base of my skull, my ears, my jaw, my eyes, just everywhere. That is what the aforementioned 50mg of amitriptyline is for but honestly it just makes the pain somewhat manageable it does not make it go away at all. I also have constant jaw, neck, shoulder and hip pain- all bilateral and all varying in degrees of severity. (This is all pain that is dull enough that I have just attributed it to daily living, a rather large overbite causing TMJ, and bad posture) I will note however that the hip pain can get EXTREMELY SEVERE at night to the point where I am in tears and agony. I also have a constant dull ache in the upper left area of my chest that is unbearably annoying and hasn't gone away a single day for 7 years. Doctors are all stumped by this pain so I just gave up trying. To wrap things up, (I want to be thorough in case a real doctor or well-read person happens upon this post and could maybe offer some insight or even diagnose me!) I have horrendous insomnia, restless legs at night, periods (at least 10x a year) of extreme bouts of excruciatingly painful diarrhea that lasts over a week, and irregular menstrual cycles (not on birth control). If you have any other questions that may help you diagnose or at least guide me in the right direction, pleaseeeee ask and I will answer PROMPTLY! I just feel like I can't go on maintaining my life like this anymore. I am at my wits end and I feel like I can't take anymore of this I am pleading and praying for all the help I can get. Thanks for reading, ~Courtney